Holy Thursday
What it commemorates
Holy Thursday solemnly commemorates the institution of the Holy Eucharist at the Last Supper.
Place in the liturgical year
It is the Thursday of Holy Week and the oldest of the observances proper to that week.
In the 1962 Latin Mass Calendar
In the 1962 calendar it is kept as a day of the first class: Feria quinta – In Cena Domini.
Modern Roman Calendar
The Modern Roman Calendar ranks it as a celebration with precedence over solemnities; its ranks differ from the four classes of 1962.